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https://issues.apache.org/jira/browse/PROTON-2146?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16981867#comment-16981867
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ASF subversion and git services commented on PROTON-2146:
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Commit b53246cacf63f60745fa0a6fa7b50e5545fd23ec in qpid-proton's branch
refs/heads/master from Clifford Jansen
[ https://gitbox.apache.org/repos/asf?p=qpid-proton.git;h=b53246c ]
PROTON-2146: reduce memory per connection for lightly loaded connections
> Reduce memory per connection
> ----------------------------
>
> Key: PROTON-2146
> URL: https://issues.apache.org/jira/browse/PROTON-2146
> Project: Qpid Proton
> Issue Type: Improvement
> Components: proton-c
> Affects Versions: proton-c-0.29.0
> Reporter: Clifford Jansen
> Assignee: Clifford Jansen
> Priority: Major
>
> The transport currently starts with 2 16K buffers: one for input and one for
> output, and they grow from there depending on load.
> Instrumenting with Quiver and Qpid dispatch router shows that these starting
> buffer sizes can be reduced to 8K without detectable performance degradation.
> This can reduce memory load by close to 16K per connection for processes with
> large numbers of lightly loaded connections. Connections with heavier load
> will still grow as large as before, but with one extra 8K->16K growth step in
> buffer size.
> Reducing to 4K does lead to a degradation of several percent and further
> reductions to 2K leads to a degradation closer to 20%. So smaller starting
> sizes are not considered for now, but reworking the transport growth strategy
> might make it possible in future.
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